| Value | Category | Cases | |
|---|---|---|---|
| 1 | Not effective at all | 11 |
11.5%
|
| 2 | 6 |
6.3%
|
|
| 3 | 11 |
11.5%
|
|
| 4 | 7 |
7.3%
|
|
| 5 | 7 |
7.3%
|
|
| 6 | 5 |
5.2%
|
|
| 7 | 8 |
8.3%
|
|
| 8 | 9 |
9.4%
|
|
| 9 | 12 |
12.5%
|
|
| 10 | Very effective | 9 |
9.4%
|
| 11 | Don't know | 11 |
11.5%
|
| Sysmiss | 68 |